peo_01 = {
    'first_name' : 'jin',
    'last_name' : "luan",
    "age" : 12,
    "city" : 'london' ,
}
peo_02 = {
    'first_name' : 'zhang',
    'last_name' : "san",
    "age" : 14,
    "city" : 'sini' ,
}
peo_03 = {
    'first_name' : 'li',
    'last_name' : "si",
    "age" : 22,
    "city" : 'xinepo' ,
}

people=[peo_01, peo_02, peo_03]

print(people)
for value in people:
    print(value['first_name'])
print()

for value in people:
    for s,y in value.items():
        print(s,end="，")
        print(y)